Buildings at the Canary Wharf development, including buildings for Citigroup Inc.,...Buildings at the Canary Wharf development, including buildings for Citigroup Inc., left, and HSBC Holdings Plc, right, sit against a backdrop of London's financial centre in London, U.K., on Wednesday, May 19, 2010. Job vacancies at London financial-services companies fell 12 percent in April as Britain headed into elections that resulted in a coalition government and the European Union struggled to cut deficits. Photographer: Chris Ratcliffe/Bloomberg via Getty ImagesLessMore

Ships sit moored at the Tate & Lyle sugar refinery on the banks of the River Thames in this aerial view in London, U.K., on Wednesday, May 19, 2010. Job vacancies at London financial-services companies fell 12 percent in April as...More

Ships sit moored at the Tate & Lyle sugar refinery on the banks of the River Thames...Ships sit moored at the Tate & Lyle sugar refinery on the banks of the River Thames in this aerial view in London, U.K., on Wednesday, May 19, 2010. Job vacancies at London financial-services companies fell 12 percent in April as Britain headed into elections that resulted in a coalition government and the European Union struggled to cut deficits. Photographer: Chris Ratcliffe/Bloomberg via Getty ImagesLessMore

Construction work on the Olympic Stadium and the site of the 2012 Olympic Park are seen in London, U.K., on Wednesday, May 19, 2010. Job vacancies at London financial-services companies fell 12 percent in April as Britain headed into...More

Construction work on the Olympic Stadium and the site of the 2012 Olympic Park are...Construction work on the Olympic Stadium and the site of the 2012 Olympic Park are seen in London, U.K., on Wednesday, May 19, 2010. Job vacancies at London financial-services companies fell 12 percent in April as Britain headed into elections that resulted in a coalition government and the European Union struggled to cut deficits. Photographer: Chris Ratcliffe/Bloomberg via Getty ImagesLessMore

Construction work at the Olympic Stadium and the site of the 2012 Olympic Park are seen in London, U.K., on Wednesday, May 19, 2010. Job vacancies at London financial-services companies fell 12 percent in April as Britain headed into...More

Construction work at the Olympic Stadium and the site of the 2012 Olympic Park are...Construction work at the Olympic Stadium and the site of the 2012 Olympic Park are seen in London, U.K., on Wednesday, May 19, 2010. Job vacancies at London financial-services companies fell 12 percent in April as Britain headed into elections that resulted in a coalition government and the European Union struggled to cut deficits. Photographer: Chris Ratcliffe/Bloomberg via Getty ImagesLessMore

Buildings including the Tower 42 and the Swiss Re building, also known as the 'Gherkin,' sit in the city's financial district in London, U.K., on Wednesday, May 19, 2010. Job vacancies at London financial-services companies fell 12...More

Buildings including the Tower 42 and the Swiss Re building, also known as the...Buildings including the Tower 42 and the Swiss Re building, also known as the 'Gherkin,' sit in the city's financial district in London, U.K., on Wednesday, May 19, 2010. Job vacancies at London financial-services companies fell 12 percent in April as Britain headed into elections that resulted in a coalition government and the European Union struggled to cut deficits. Photographer: Chris Ratcliffe/Bloomberg via Getty ImagesLessMore

The Tower Bridge and the River Thames are seen in London, U.K., on Wednesday, May 19, 2010. Job vacancies at London financial-services companies fell 12 percent in April as Britain headed into elections that resulted in a coalition...More

The Tower Bridge and the River Thames are seen in London, U.K., on Wednesday, May...The Tower Bridge and the River Thames are seen in London, U.K., on Wednesday, May 19, 2010. Job vacancies at London financial-services companies fell 12 percent in April as Britain headed into elections that resulted in a coalition government and the European Union struggled to cut deficits. Photographer: Chris Ratcliffe/Bloomberg via Getty ImagesLessMore

A London subway train moves overground in London, U.K., on Wednesday, May 19, 2010. Job vacancies at London financial-services companies fell 12 percent in April as Britain headed into elections that resulted in a coalition government...More

A London subway train moves overground in London, U.K., on Wednesday, May 19, 2010....A London subway train moves overground in London, U.K., on Wednesday, May 19, 2010. Job vacancies at London financial-services companies fell 12 percent in April as Britain headed into elections that resulted in a coalition government and the European Union struggled to cut deficits. Photographer: Chris Ratcliffe/Bloomberg via Getty ImagesLessMore

The River Thames flows with buildings in the financial district and Canary Wharf in London, U.K., on Wednesday, May 19, 2010. Job vacancies at London financial-services companies fell 12 percent in April as Britain headed into...More

The River Thames flows with buildings in the financial district and Canary Wharf in...The River Thames flows with buildings in the financial district and Canary Wharf in London, U.K., on Wednesday, May 19, 2010. Job vacancies at London financial-services companies fell 12 percent in April as Britain headed into elections that resulted in a coalition government and the European Union struggled to cut deficits. Photographer: Chris Ratcliffe/Bloomberg via Getty ImagesLessMore

Tower 42 and the Swiss Re building, also known as the 'Gherkin,' sit against a backdrop of the Canary Wharf development in London, U.K., on Wednesday, May 19, 2010. Job vacancies at London financial-services companies fell 12 percent...More

Tower 42 and the Swiss Re building, also known as the 'Gherkin,' sit against a...Tower 42 and the Swiss Re building, also known as the 'Gherkin,' sit against a backdrop of the Canary Wharf development in London, U.K., on Wednesday, May 19, 2010. Job vacancies at London financial-services companies fell 12 percent in April as Britain headed into elections that resulted in a coalition government and the European Union struggled to cut deficits. Photographer: Chris Ratcliffe/Bloomberg via Getty ImagesLessMore

Buildings including the Tower 42 and the Swiss Re building, also known as the 'Gherkin,' sit in the city's financial district in London, U.K., on Wednesday, May 19, 2010. Job vacancies at London financial-services companies fell 12...More

Buildings including the Tower 42 and the Swiss Re building, also known as the...Buildings including the Tower 42 and the Swiss Re building, also known as the 'Gherkin,' sit in the city's financial district in London, U.K., on Wednesday, May 19, 2010. Job vacancies at London financial-services companies fell 12 percent in April as Britain headed into elections that resulted in a coalition government and the European Union struggled to cut deficits. Photographer: Chris Ratcliffe/Bloomberg via Getty ImagesLessMore